WO2022088317A1 - 用于冷凝器的脏堵状态判定装置及判定方法 - Google Patents

用于冷凝器的脏堵状态判定装置及判定方法 Download PDF

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WO2022088317A1
WO2022088317A1 PCT/CN2020/130363 CN2020130363W WO2022088317A1 WO 2022088317 A1 WO2022088317 A1 WO 2022088317A1 CN 2020130363 W CN2020130363 W CN 2020130363W WO 2022088317 A1 WO2022088317 A1 WO 2022088317A1
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working fluid
temperature
condenser
dirty
cooling medium
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PCT/CN2020/130363
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English (en)
French (fr)
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韩年生
项宇
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艾默生环境优化技术(苏州)有限公司
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Publication of WO2022088317A1 publication Critical patent/WO2022088317A1/zh

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28BSTEAM OR VAPOUR CONDENSERS
    • F28B11/00Controlling arrangements with features specially adapted for condensers

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  • the present disclosure relates to a device for judging a dirty blockage state of a condenser and a method for judging a dirty blockage state of a condenser.
  • the condenser typically utilizes a liquid cooling medium, such as cooling water, to condense a gaseous working fluid into a liquid working fluid. Since carbonic acid is easily formed when the cooling medium flows through the metal surface, and the dissolved oxygen in the liquid cooling medium can cause corrosion and rusting of the metal, the liquid cooling medium carries a large amount of rusted impurities and dust, which are deposited in the condensation In the condenser, the increase of deposits will increase the energy consumption, thereby reducing the condensing efficiency of the condenser. And when there is too much sediment, it can completely block the condenser, making it unable to work properly.
  • a liquid cooling medium such as cooling water
  • An object of one or more embodiments of the present disclosure is to provide a dirty blockage state determination device and determination method that can reliably and efficiently determine a dirty blockage state in a condenser in various ways.
  • Another object of one or more embodiments of the present disclosure is to provide a dirty blockage state determination device and determination method capable of sensitively and accurately determining a dirty blockage state in a condenser.
  • a dirty blockage state determination device for a condenser that uses a liquid cooling medium for heat exchange and includes a first inflow pipe and a first discharge pipe for the liquid cooling medium
  • the circuit, the second inflow pipeline and the second discharge pipeline for the working fluid characterized in that the dirty blockage state determination device includes: a first detection part, the first detection part is provided in the first discharge
  • the temperature value T1 of the liquid cooling medium is obtained at the pipeline; the second detection part, which is arranged at the second discharge pipeline, measures the parameters of the working fluid; and the control part, the control part Connected to the first detection unit and the second detection unit, the control unit acquires a temperature value T2 associated with the working fluid according to the measured parameters of the working fluid, and the control unit calculates the The temperature difference between the temperature value T2 and the temperature value T1 is compared with a preset temperature difference threshold, and if the temperature difference is greater than the temperature difference threshold, it is determined that the condenser is dirty and blocked.
  • the second detection part is a pressure sensor, and the parameter of the working fluid is the condensing pressure of the working fluid; the control part obtains the temperature value T2 according to the condensing pressure of the working fluid ; or the second detection part is a temperature sensor, and the parameter of the working fluid is the discharge temperature of the working fluid; the control part directly obtains the discharge temperature of the working fluid as the temperature value T2.
  • the device for determining a dirty blockage state further includes an alarm module, the alarm module is connected to the control part, and the alarm module sends out an alarm when the control part determines that a dirty blockage occurs.
  • the alarm module includes a display screen of the control part, and the display screen displays status abnormality information when the control part determines that a dirty block occurs.
  • the liquid cooling medium is water, brine, or a mixture of water and ethylene glycol.
  • the temperature difference threshold is in the range of 12°C to 15°C.
  • the first detection part is a temperature sensor.
  • a method for judging a dirty blockage state of a condenser that uses a liquid cooling medium for heat exchange and includes a first inflow line for the liquid cooling medium and a A first discharge line and a second inflow line and a second discharge line for working fluid, wherein the method comprises: measuring the temperature of the liquid cooling medium at the first discharge line to The first measurement step of acquiring the temperature value T1 of the liquid cooling medium; the second measurement step of measuring the parameters of the working fluid at the second discharge pipeline; the The step of obtaining the temperature of the temperature value T2 associated with the working fluid; the step of calculating the temperature difference between the temperature value T2 and the temperature value T1; comparing the calculated temperature difference with a preset temperature difference threshold and a judging step of judging that the condenser is dirty and blocked if the temperature difference is greater than the temperature difference threshold.
  • the parameter of the working fluid is the condensation pressure of the working fluid
  • the temperature obtaining step according to the measured working fluid
  • the temperature value T2 is obtained from the condensing pressure at the temperature of The discharge temperature of the working fluid is directly obtained as the temperature value T2.
  • the method further includes an alarming step, the alarming step issuing an alarm when the determining step determines that a dirty blockage occurs.
  • the alarm is abnormal state information displayed on the display screen.
  • the dirty blocking state determination device and the determination method for the condenser according to the present disclosure can reliably and effectively determine the dirty blocking state in the condenser.
  • FIG. 1 is a schematic diagram schematically showing a dirty blockage state determination device for a condenser according to a first embodiment of the present disclosure
  • FIG. 2 is a flowchart schematically illustrating a method for determining a dirty block state using the dirty block state determination device for a condenser according to the first embodiment of the present disclosure
  • Fig. 3 is the temperature curve diagram of cooling medium and working fluid with thermal resistance
  • FIG. 4 is a schematic diagram schematically showing a dirty blockage state determination device for a condenser according to a second embodiment of the present disclosure.
  • FIG. 5 is a flowchart schematically showing a method of performing a dirty block state determination using the dirty block state determination device for a condenser according to the second embodiment of the present disclosure.
  • the condenser 1 uses a liquid cooling medium for heat exchange, and includes a first inflow line 10 and a first discharge line 20 for the liquid cooling medium and a second inflow line (not shown in the figures) and the second discharge line 30 .
  • the gaseous working fluid enters the condenser 1 from the second inflow line, and the gaseous working fluid exchanges heat with the low-temperature liquid cooling medium in the process of flowing through the condenser 1 to transfer heat to
  • the cooling medium is thus condensed into a liquid working fluid, after which the liquid working fluid is discharged from the condenser 1 through the second discharge line 30 .
  • the low temperature cooling medium enters the condenser 1 from the first inflow line 10 and absorbs the heat of the working fluid in the condenser 1 so that the temperature rises, and the high temperature cooling medium is discharged from the condenser 1 through the first discharge line 20 .
  • the liquid cooling medium may include, for example, water, brine, a mixture of water and glycol, and the like.
  • water can be used as the cooling medium due to its higher specific heat capacity and lower cost of use.
  • the condenser 1 is further provided with a condenser fouling judging device.
  • the clogged state determination device for a condenser includes a first detection part 410 , a second detection part 420 , and a control part 430 .
  • the first detection part 410 is exemplarily shown as being provided at the first discharge line 20 and taking the discharge temperature of the cooling medium as the temperature value T1 of the cooling medium.
  • the second detection part 420 is a pressure sensor provided at the second discharge line 30 , and the pressure sensor is used to measure the condensation pressure of the working fluid discharged from the condenser in the second discharge line 30 .
  • the control unit 430 is connected to the first detection unit 410 and the second detection unit 420 .
  • the control part 430 obtains the temperature value T2 related to the working fluid according to the condensing pressure of the working fluid, for example, converts the measured condensing pressure of the working fluid into the condensing temperature of the working fluid, and obtains the condensing temperature as the temperature related to the working fluid value T2.
  • the control part 430 calculates the temperature difference between the temperature value T2 related to the working fluid and the temperature value T1 of the liquid cooling medium, and compares the temperature difference with a preset temperature difference threshold stored in the control part. If the set temperature difference threshold is set, the control unit 430 determines that the condenser 1 is clogged.
  • the preset temperature difference threshold can be in the range of 12°C to 15°C. Within the above range, on the one hand, the sensitivity of the device for judging the dirty block state can be ensured, and on the other hand, it can avoid the occurrence of excessively low thresholds. Condenser deposits need to be cleaned frequently.
  • the device for determining a dirty blockage state for a condenser may further include an alarm module 50, which is connected to the control part 430 and issues, for example, when the control part 430 determines that the condenser 1 is dirty and blocked. Audible and/or light alarm messages.
  • the alarm module 50 is shown as a separate alarm device separate from the control part 430, alternatively, the alarm module 50 may also include a display screen of the control part 430, which outputs the abnormal state message to indicate dirty blockage. In this way, the use of an additional alarm device can be avoided, saving costs.
  • the first detection part 410 measures the temperature of the liquid cooling medium to obtain the temperature value T1 of the liquid cooling medium; and in the second measurement step S200, the second detection part 420 measures the second The condensing pressure of the working fluid in the discharge line 30 is measured.
  • the control unit 430 obtains the temperature value T2 according to the condensing pressure of the working fluid, for example, converts the condensing pressure of the working fluid into the condensing temperature of the working fluid, and obtains the condensing temperature as the temperature value T2 .
  • the control unit 430 calculates the temperature difference between the temperature value T2 related to the working fluid and the temperature value T1 of the liquid cooling medium.
  • the comparison step S500 the control unit 430 compares the calculated temperature difference with a preset temperature difference threshold.
  • the control unit 430 determines that the condenser 1 is dirty and blocked.
  • the method may further include an alarming step S700, when the determining step S600 determines that there is a dirty block, the alarming step S700 issues an alarm, and the alarm may be abnormal state information displayed on the display screen of the control unit 430.
  • the inflow temperature and the discharge temperature of the cooling medium are measured using two temperature sensors provided on the first inflow line 10 and the first discharge line 20, and the dirty blockage in the dirty blockage state is determined using the temperature difference between the inflow temperature and the discharge temperature.
  • the dirty block state determination device can effectively improve the sensitivity of the determination device, thereby improving the condensation performance of the condenser and reducing the energy consumption of the system.
  • the fouling state judging device can determine the fouling state only when the condenser is completely blocked by deposits.
  • the dirty blockage state determination device can determine the dirty blockage state and automatically trigger an alarm message or display an abnormal state when there are few deposits in the water-cooled condenser and the condenser is not completely blocked. information. Therefore, the dirty blocking state determination device according to the first embodiment of the present disclosure can avoid high pressure alarm, improve the reliability and energy efficiency of the unit, and also avoid the labor cost of requiring personnel to regularly clean the filter.
  • the thermal resistance of the condenser 1 increases accordingly as more deposits accumulate. As shown in Fig. 3, as the thermal resistance increases, the condensing temperature of the working fluid increases correspondingly, while the discharge temperature and inflow temperature of the cooling medium remain basically unchanged.
  • the fouling state judging device that makes the judgment based on the temperature difference between the discharge temperature and the inflow temperature of the cooling medium cannot determine the fouling phenomenon sensitively and accurately.
  • the fouling state determination device uses the temperature difference between the condensing temperature of the working fluid and the discharge or inflow temperature of the cooling medium to make the determination, and the temperature difference can sensitively and accurately reflect the fouling in the condenser. Therefore, the sensitivity of the fouling state determination device can be effectively improved.
  • a dirty blockage state determination device for a condenser for a condenser according to a second embodiment of the present disclosure.
  • the main structure and function of the dirty blockage state determination device for a condenser according to the second embodiment of the present disclosure are basically the same as those of the dirty blockage state determination device for a condenser according to the first embodiment of the present disclosure, and the difference is only In the second detection section, a temperature sensor is used instead of the pressure sensor.
  • the fouling state determination device for a condenser includes a second detection part 420a, which is a temperature sensor that measures the discharge temperature of the working fluid Therefore, the control unit 430 connected to the second detection unit 420a can directly acquire the discharge temperature of the working fluid as the temperature value T2 related to the working fluid.
  • FIG. 5 is a flowchart showing a method of making a determination using the dirty blockage state determination device for a condenser according to the second embodiment of the present disclosure.
  • the steps of the method for determination using the dirty state determination device according to the second embodiment of the present disclosure are basically the same as those of the method for determination using the dirty state determination device according to the first embodiment of the present disclosure, and the difference is only in that , in the second measurement step S200', the second detection unit 420a measures the discharge temperature of the working fluid. Then, in the condensation temperature acquisition step S300', the control unit 430 directly acquires the discharge temperature of the working fluid as the temperature value T2 related to the working fluid.
  • the dirty blockage state determination device and method for a condenser according to the second embodiment of the present disclosure can utilize the price comparison.
  • Low temperature sensor replaces pressure sensor, thus saving production cost.

Abstract

一种用于冷凝器(1)的脏堵状态判定装置和用于对冷凝器(1)的脏堵状态进行判定的方法;所述的脏堵状态判定装置包括第一检测部(410),所述第一检测部(410)设置在第一排出管路(20)处以获取液态冷却介质的温度值T1;第二检测部(420,420a),所述第二检测部(420,420a)设置在第二排出管路(30)处,对工作流体的参数进行测量;以及控制部(430),所述控制部(430)与所述第一检测部(410)和所述第二检测部(420,420a)连接;所述控制部(430)根据测得的工作流体的参数获取与工作流体相关联的温度值T2,所述控制部(430)计算所述温度值T2和所述温度值T1的温度差,将所述温度差与预设的温度差阈值进行比较,如果所述温度差大于所述温度差阈值则判定所述冷凝器(1)出现脏堵。

Description

用于冷凝器的脏堵状态判定装置及判定方法
本申请要求以下中国专利申请的优先权:于2020年10月28日提交中国专利局的申请号为202011174132.8、发明创造名称为“用于冷凝器的脏堵状态判定装置及判定方法”的中国专利申请。上述专利申请的全部内容通过引用结合在本申请中。
技术领域
本公开涉及一种用于冷凝器的脏堵状态判定装置以及用于对冷凝器的脏堵状态进行判定的方法。
背景技术
本部分的内容仅提供了与本公开相关的背景信息,其可能并不构成现有技术。
冷凝器通常利用例如冷却水等液态冷却介质来使气态的工作流体冷凝成液态的工作流体。由于冷却介质流经金属表面时容易形成碳酸,并且液态冷却介质中的溶解氧会导致金属腐蚀和生锈,因此液态冷却介质中携带有大量生锈的杂质以及灰尘,这些杂质和灰尘沉积在冷凝器中,沉积物的增加会增加能耗,从而降低冷凝器的冷凝效率。并且当沉积物过多时,可能完全阻塞冷凝器,使得冷凝器无法正常工作。
因此,在冷凝器中设置对脏堵状态进行判定的脏堵状态判定装置是非常重要的。
发明内容
本公开的一个或多个实施方式的一个目的是提供一种能够以不同方式可靠地及有效地对冷凝器中的脏堵状态进行判定的脏堵状态判定装置以及判定方法。
本公开的一个或多个实施方式的另一个目的是提供一种能够灵敏、准确地对冷凝器中的脏堵状态进行判定的脏堵状态判定装置以及判定方法。
根据本公开的一个方面,提供了一种用于冷凝器的脏堵状态判定装置,所 述冷凝器采用液态冷却介质进行换热并且包括用于液态冷却介质的第一流入管路和第一排出管路以及用于工作流体的第二流入管路和第二排出管路,其特征在于,所述脏堵状态判定装置包括:第一检测部,所述第一检测部设置在所述第一排出管路处以获取液态冷却介质的温度值T1;第二检测部,所述第二检测部设置在所述第二排出管路处,对工作流体的参数进行测量;以及控制部,所述控制部与所述第一检测部和所述第二检测部连接,所述控制部根据测得的所述工作流体的参数获取与所述工作流体相关联的温度值T2,所述控制部计算所述温度值T2和所述温度值T1的温度差,将所述温度差与预设的温度差阈值进行比较,如果所述温度差大于所述温度差阈值则判定所述冷凝器出现脏堵。
根据本公开的一个方面,所述第二检测部为压力传感器,所述工作流体的参数为所述工作流体的冷凝压力;所述控制部根据所述工作流体的冷凝压力获取所述温度值T2;或者所述第二检测部为温度传感器,所述工作流体的参数为所述工作流体的排出温度;所述控制部直接将所述工作流体的排出温度获取为所述温度值T2。
根据本公开的一个方面,所述脏堵状态判定装置还包括报警模块,所述报警模块与所述控制部连接,所述报警模块在所述控制部判定出现脏堵时发出警报。
根据本公开的一个方面,所述报警模块包括所述控制部的显示屏,所述显示屏在所述控制部判定出现脏堵时显示状态异常信息。
根据本公开的一个方面,所述液态冷却介质为水、盐水、或水和乙二醇的混合物。
根据本公开的一个方面,所述温度差阈值处于12℃到15℃的范围内。
根据本公开的一个方面,所述第一检测部为温度传感器。
根据本公开的另一个方面,提供了一种用于对冷凝器的脏堵状态进行判定的方法,所述冷凝器采用液态冷却介质进行换热并且包括用于液态冷却介质的第一流入管路和第一排出管路以及用于工作流体的第二流入管路和第二排出管路,其特征在于,所述方法包括:在所述第一排出管路处对液态冷却介质的温度进行测量以获取液态冷却介质的温度值T1的第一测量步骤;在所述第二排出管路处对工作流体的参数进行测量的第二测量步骤;根据测得的所述工作流体的参数获取与所述工作流体相关联的温度值T2的温度获取步骤;计算与 所述温度值T2与所述温度值T1的温度差的计算步骤;将计算所得的所述温度差与预设的温度差阈值进行比较的对比步骤;以及如果所述温度差大于所述温度差阈值,则判定所述冷凝器出现脏堵的判定步骤。
根据本公开的另一个方面,在所述第二测量步骤中,所述工作流体的参数为所述工作流体的冷凝压力,并且,在所述温度获取步骤中,根据测得的所述工作流体的冷凝压力获取所述温度值T2;或者在所述第二测量步骤中,所述工作流体的参数为所述工作流体的排出温度,并且,在所述温度获取步骤中,将测得的所述工作流体的排出温度直接获取为所述温度值T2。
根据本公开的另一个方面,所述方法还包括报警步骤,所述报警步骤在所述判定步骤判定出现脏堵时发出警报。
根据本公开的另一个方面,所述警报为显示屏所显示的异常状态信息。
根据本公开的用于冷凝器的脏堵状态判定装置以及判定方法能够可靠有效地对冷凝器中的脏堵状态进行判定。
附图说明
通过以下参照附图的描述,本公开的一个或多个实施方式的特征和优点将变得更加容易理解。这里所描述的附图仅是出于说明目的而并非意图以任何方式限制本公开的范围。附图并非按比例绘制,而是可以放大或缩小一些特征以显示特定部件的细节。在附图中:
图1为示意性地示出了根据本公开的第一实施方式的用于冷凝器的脏堵状态判定装置的示意图;
图2为示意性地示出了使用根据本公开的第一实施方式的用于冷凝器的脏堵状态判定装置进行脏堵状态判定的方法的流程图;
图3为冷却介质以及工作流体随热阻变化的温度曲线图;
图4为示意性地示出了根据本公开的第二实施方式的用于冷凝器的脏堵状态判定装置的示意图;以及
图5为示意性地示出了使用根据本公开的第二实施方式的用于冷凝器的脏堵状态判定装置进行脏堵状态判定的方法的流程图。
具体实施方式
下面将参照附图对本公开进行描述,该描述仅仅是示例性的,而不构成对本公开及其应用的限制。
如图1所示,冷凝器1采用液态冷却介质进行换热,并且其包括用于液态冷却介质的第一流入管路10和第一排出管路20以及用于工作流体的第二流入管路(图中未示出)和第二排出管路30。在冷凝器的运行过程中,气态工作流体从第二流入管路进入冷凝器1,气态工作流体在流动穿过冷凝器1的过程中与低温的液态冷却介质发生热交换,以将热量传递至冷却介质从而冷凝成液态工作流体,此后,液态工作流体经由第二排出管路30排出冷凝器1。同时,低温的冷却介质从第一流入管路10进入冷凝器1并在冷凝器1中吸收工作流体的热量因此温度升高,高温的冷却介质经由第一排出管路20排出冷凝器1。
液态冷却介质例如可以包括水、盐水、水和乙二醇的混合物等。优选地,可以使用水作为冷却介质由于其具有较高的比热容和较低廉的使用成本。
为了对冷凝器的脏堵状态进行判定,冷凝器1还设置有冷凝器脏堵判定装置。如图1所示,根据本公开第一实施方式的用于冷凝器的脏堵状态判定装置包括第一检测部410、第二检测部420以及控制部430。在图1中,第一检测部410示例性地示出为设置在第一排出管路20处并将冷却介质的排出温度作为冷却介质的温度值T1。第二检测部420为设置在第二排出管路30处的压力传感器,该压力传感器用于对第二排出管路30中的排出冷凝器的工作流体的冷凝压力进行测量。
控制部430与第一检测部410和第二检测部420相连接。控制部430根据工作流体的冷凝压力获取工作流体相关的温度值T2,例如,将测得的工作流体的冷凝压力转换成工作流体的冷凝温度,并将该冷凝温度获取为与工作流体相关的温度值T2。控制部430计算与工作流体相关的温度值T2和液态冷却介质的温度值T1的温度差,并将该温度差与存储在控制部中的预设的温度差阈值进行比较,如果温度差大于预设的温度差阈值,则控制部430判定冷凝器1出现脏堵。在本申请中,预设的温度差阈值可以处于12℃至15℃的范围内,在上述范围内,一方面可以确保脏堵状态判定装置的灵敏度,另一方面还可以避免由于阈值过低导致需要频繁地清理冷凝器的沉积物。
根据本公开的第一实施方式的用于冷凝器的脏堵状态判定装置还可以包括报警模块50,报警模块50与控制部430相连接并且在控制部430判定冷凝器1出现脏堵时发出例如声和/或光的警报信息。在图1所示的实施方式中,报警模块50示出为与控制部430分离的单独的报警装置,替代性地,报警模块50也可以包括控制部430的显示屏,该显示屏输出异常状态信息以提示脏堵。以此方式,能够避免使用额外的报警装置,节省成本。
下面,将参照图2来详细描述使用根据本公开的第一实施方式的用于冷凝器的脏堵状态判定装置进行脏堵状态判定的方法。首先,在第一测量步骤S100中,第一检测部410对液态冷却介质的温度进行测量以获取液态冷却介质的温度值T1;并且在第二测量步骤S200中,第二检测部420对第二排出管路30中的工作流体的冷凝压力进行测量。然后,在温度获取步骤S300中,控制部430根据工作流体的冷凝压力获取温度值T2,例如,将工作流体的冷凝压力转换成工作流体的冷凝温度,并将该冷凝温度获取为与温度值T2。接着,在计算步骤S400中,控制部430计算与工作流体相关的温度值T2和液态冷却介质的温度值T1的温度差。随后,在比较步骤S500中,控制部430对计算所得的温度差与预设的温度差阈值进行对比。最后在判定步骤S600中,如果温度差大于预设的温度差阈值,控制部430判定冷凝器1出现脏堵。该方法还可以包括报警步骤S700,当判定步骤S600判定出现脏堵时,该报警步骤S700发出警报,警报可以为由控制部430的显示屏所显示的异常状态信息。
与使用设置在第一流入管路10和第一排出管路20上的两个温度传感器测量冷却介质的流入温度和排出温度,并且利用流入温度和排出温度的温度差来判定脏堵状态的脏堵状态判定装置相比,根据本公开的第一实施方式的脏堵状态判定装置能够有效地提高判定装置的灵敏度,从而提高冷凝器的冷凝性能并且降低系统的能耗。具体而言,在使用冷却介质的流入温度和排出温度的温度差作为判定基准的脏堵状态判定装置中,只有冷凝器被沉积物完全阻塞时脏堵状态判定装置才能判定出脏堵现象。一方面,这使得冷凝器性能降低并且能耗增大,另一方面,冷凝器被沉积物完全阻塞时进出水压力差变大,因此容易导致系统出现高压报警,这对与冷凝器结合使用的压缩机的安全运行造成潜在危害。本申请的发明人经过反复研究发现,采用工作流体的冷凝温度与冷却介质 的相关温度的差值进行判定能够更灵敏、准确地对冷凝器中的脏堵现象进行判定,从而改善判定装置的灵敏度,提高冷凝器的冷凝性能。
根据本公开的第一实施方式的脏堵状态判定装置在水冷式冷凝器中的沉积物较少未完全阻塞冷凝器的情况下,即可判定出脏堵状态并且自动触发报警信息或显示状态异常信息。因此,根据本公开的第一实施方式的脏堵状态判定装置可以避免高压报警,提高机组的可靠性和能效,并且还能够避免需要人员定期清理过滤器的人工成本。
图3为冷却介质以及工作流体随热阻变化的温度曲线图,其中,曲线a为示出了工作流体的冷凝温度随热阻变化的曲线,曲线b为示出了冷却介质的排出温度随热阻变化的曲线,以及曲线c为示出了冷却介质的流入温度随热阻变化的曲线。在冷凝器1中,随着沉积物积累地越多,冷凝器1的热阻也相应地逐渐增大。如图3所示,随着热阻增大,工作流体的冷凝温度相应升高,而冷却介质的排出温度和流入温度却基本保持不变。因此,利用冷却介质的排出温度与流入温度的温度差进行判定的脏堵状态判定装置不能灵敏、精确地判定脏堵现象。而根据本公开的第一实施方式的脏堵状态判定装置利用工作流体的冷凝温度与冷却介质的排出或流入温度的温度差进行判定,该温度差能够灵敏、准确地反应冷凝器中的脏堵现象,因此可以有效提高脏堵状态判定装置的灵敏度。
下面将参照图4,对根据本公开的第二实施方式的用于冷凝器的脏堵状态判定装置进行具体描述。根据本公开的第二实施方式的用于冷凝器的脏堵状态判定装置与根据本公开的第一实施方式的用于冷凝器的脏堵状态判定装置的主要结构和功能基本一致,其区别仅在于使用第二检测部使用温度传感器代替压力传感器。
如图4所示,根据本公开的第二实施方式的用于冷凝器的脏堵状态判定装置包括第二检测部420a,该第二检测部420a为对工作流体的排出温度进行测量的温度传感器,因此与第二检测部420a相连接的控制部430能够直接将工作流体的排出温度获取为与工作流体相关的温度值T2。
图5为示出了使用根据本公开的第二实施方式的用于冷凝器的脏堵状态判定装置进行判定的方法的流程图。使用根据本公开的第二实施方式的脏堵状态判定装置进行判定的方法的步骤与使用根据本公开的第一实施方式的脏堵状态判定装置进行判定的方法的步骤基本相同,其区别仅在于,在第二测量步骤S200’中,第二检测部420a对工作流体的排出温度进行测量。然后,在冷凝温度获取步骤S300’中,控制部430直接将工作流体排出温获取为与工作流体相关的温度值T2。
与根据本公开的第一实施方式的用于冷凝器的脏堵状态判定装置及方法相比,根据本公开的第二实施方式的用于冷凝器的脏堵状态判定装置及方法可以利用价格较低的温度传感器代替压力传感器,从而节省生产成本。
尽管在此已详细描述本公开的各种实施方式,但是应该理解本公开并不局限于这里详细描述和示出的具体实施方式,在不偏离本公开的实质和范围的情况下可由本领域的技术人员实现其它的变型和变体。所有这些变型和变体都落入本公开的范围内。而且,所有在此描述的构件都可以由其他技术性上等同的构件来代替。

Claims (11)

  1. 一种用于冷凝器的脏堵状态判定装置,所述冷凝器(1)采用液态冷却介质进行换热并且包括用于液态冷却介质的第一流入管路(10)和第一排出管路(20)以及用于工作流体的第二流入管路和第二排出管路(30),其特征在于,所述脏堵状态判定装置包括:
    第一检测部(410),所述第一检测部设置在所述第一排出管路(20)处以获取液态冷却介质的温度值T1;
    第二检测部(420,420a),所述第二检测部设置在所述第二排出管路(30)处,对工作流体的参数进行测量;以及
    控制部(430),所述控制部与所述第一检测部和所述第二检测部连接,所述控制部根据测得的所述工作流体的参数获取与所述工作流体相关联的温度值T2,所述控制部计算所述温度值T2和所述温度值T1的温度差,将所述温度差与预设的温度差阈值进行比较,如果所述温度差大于所述温度差阈值则判定所述冷凝器(1)出现脏堵。
  2. 根据权利要求1所述的用于冷凝器的脏堵状态判定装置,其中:
    所述第二检测部(420)为压力传感器,所述工作流体的参数为所述工作流体的冷凝压力;所述控制部(430)根据所述工作流体的冷凝压力获取所述温度值T2;或者
    所述第二检测部(420a)为温度传感器,所述工作流体的参数为所述工作流体的排出温度;所述控制部(430)直接将所述工作流体的排出温度获取为所述温度值T2。
  3. 根据权利要求1所述的用于冷凝器的脏堵状态判定装置,其中:
    所述脏堵状态判定装置还包括报警模块(50),所述报警模块与所述控制部连接,所述报警模块在所述控制部判定出现脏堵时发出警报。
  4. 根据权利要求3所述的用于冷凝器的脏堵状态判定装置,其中:
    所述报警模块包括所述控制部的显示屏,所述显示屏在所述控制部判定出现脏堵时显示状态异常信息。
  5. 根据权利要求1至4中的任一项所述的用于冷凝器的脏堵状态判定装置,其中,所述液态冷却介质为水、盐水、或水和乙二醇的混合物。
  6. 根据权利要求1至4中的任一项所述的用于冷凝器的脏堵状态判定装置,其中,所述温度差阈值处于12℃到15℃的范围内。
  7. 根据权利要求1至4中的任一项所述的用于冷凝器的脏堵状态判定装置,其中,所述第一检测部为温度传感器。
  8. 一种用于对冷凝器的脏堵状态进行判定的方法,所述冷凝器(1)采用液态冷却介质进行换热并且包括用于液态冷却介质的第一流入管路(10)和第一排出管路(20)以及用于工作流体的第二流入管路和第二排出管路(30),其特征在于,所述方法包括:
    在所述第一排出管路(20)处对液态冷却介质的温度进行测量以获取液态冷却介质的温度值T1的第一测量步骤;
    在所述第二排出管路(30)处对工作流体的参数进行测量的第二测量步骤;
    根据测得的所述工作流体的参数获取与所述工作流体相关联的温度值T2的温度获取步骤;
    计算与所述温度值T2与所述温度值T1的温度差的计算步骤;
    将计算所得的所述温度差与预设的温度差阈值进行比较的对比步骤;以及
    如果所述温度差大于所述温度差阈值,则判定所述冷凝器出现脏堵的判定步骤。
  9. 根据权利要求8所述的用于对冷凝器的脏堵状态进行判定的方法,其中:
    在所述第二测量步骤中,所述工作流体的参数为所述工作流体的冷凝压力,并且,在所述温度获取步骤中,根据测得的所述工作流体的冷凝压力获取所述温度值T2;或者
    在所述第二测量步骤中,所述工作流体的参数为所述工作流体的排出温度,并且,在所述温度获取步骤中,将测得的所述工作流体的排出温度直接获取为所述温度值T2。
  10. 根据权利要求8或9所述的用于对冷凝器的脏堵状态进行判定的方法,其中,所述方法还包括报警步骤,所述报警步骤在所述判定步骤判定出现脏堵时发出警报。
  11. 根据权利要求10所述的用于对冷凝器的脏堵状态进行判定的方法,其中,所述警报为显示屏所显示的异常状态信息。
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